PyPDF2处理单页PDF字节串遇流错误，Google Document AI无输出求助

• 异常表现：处理某特定单页PDF时抛出错误：Invalid stream (index 0) within object 14 0: Stream has ended unexpectedly
• 矛盾现象：输出字节串转存为PDF后可正常打开，但Google Document AI处理该字节串列表时无任何输出
• 影响范围：仅该特定PDF出现问题，其他PDF处理均正常

相关函数代码：

from PyPDF2 import PdfReader, PdfWriter
import io
from typing import List

def pdf_to_list(byte_string: bytes) -> List[bytes]:
    pdf_pages = []
    with io.BytesIO(byte_string) as stream:
        pdf = PdfReader(stream, strict = False)
        num_pages = len(pdf.pages)
        for page_number in range(num_pages):
            pdf_writer = PdfWriter()
            pdf_writer.add_page(pdf.pages[page_number])
            output_stream = io.BytesIO()
            pdf_writer.write(output_stream)
            output_stream.seek(0)
            pdf_pages.append(output_stream.read())
    return pdf_pages

def save_bytestring_as_pdf(bytestring: bytes, file_path: str) -> None:
    with open(file_path, 'wb') as file:
        file.write(bytestring)
    print(f'Bytestring saved as PDF: {file_path}')

我可提供该问题PDF用于测试，求问问题原因及解决方法。

内容的提问来源于stack exchange，提问作者Atilio